Space Time Speed Pace and Mean

Legend: x-axis coordinate, x; length interval, Δx; unit of length, ; t-axis coordinate, t; time interval, Δt; unit of time, .

For scalars:

Rates Speed/Pace Symbols Space Time
Ordinary Time speed Δx(t)/ measure length/distance/ displacement given period/unit
Alternate Space speed t(x) given length/distance/unit measure interval/period /dischronment
Inverse Space pace Δt(x)/ given length/distance/unit measure interval/period /dischronment
Alt. Inverse Time pace x(t) measure length/distance/ displacement given period/unit
Point
Ordinary Instantaneous speed dx(t)/dt given length/distance/ displacement given instant
Alternate Puncstanceous speed dx/dt(x)= 1/(dt/dx) given point given interval/period
Inverse Puncstanceous pace dt(x)/dx given point given interval/period
Alt. Inverse Instantaneous pace dt/dx(t)= 1/(dx/dt) given length/distance/ displacement given instant

For vectors:

Rates Velocity/Lenticity Symbols Space Time
Ordinary Time velocity Δx/ measure length/distance/ displacement given period/unit
Alternate Space velocity t given length/distance/unit measure interval/period /dischronment
Inverse Space lenticity Δt/ given length/distance/unit measure interval/period /dischronment
Alt. Inverse Time lenticity x measure length/distance/ displacement given period/unit
Point    
Ordinary Instantaneous velocity dx(t)/dt given length/distance/ displacement given instant
Alternate Puncstanceous velocity dx/dt(x)= 1/(dt/dx) given point given interval/period
Inverse Puncstanceous lenticity dt(x)/dx given point given interval/period
Alt. Inverse Instantaneous lenticity dt/dx(t)= 1/(dx/dt) given length/distance/ displacement given instant